From: Timo Sirainen <tss@iki.fi>
Date: Wed, 14 May 2003 18:23:40 +0000 (+0300)
Subject: missing
X-Git-Tag: 1.1.alpha1~4640
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=615f6231e6f3b30ae6eb038883ea6e8070224cd7;p=thirdparty%2Fdovecot%2Fcore.git

missing

--HG--
branch : HEAD
---

diff --git a/src/lib/module-dir.c b/src/lib/module-dir.c
new file mode 100644
index 0000000000..4a58d8f008
--- /dev/null
+++ b/src/lib/module-dir.c
@@ -0,0 +1,131 @@
+/* Copyright (C) 2003 Timo Sirainen */
+
+#include "lib.h"
+#include "module-dir.h"
+
+#ifdef HAVE_MODULES
+
+#include <unistd.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+static void *get_symbol(const char *path, void *handle, const char *symbol)
+{
+	const char *error;
+	void *ret;
+
+	/* get our init func */
+	ret = dlsym(handle, symbol);
+
+	error = dlerror();
+	if (error != NULL) {
+		i_error("module %s: dlsym(%s) failed: %s", path, symbol, error);
+		ret = NULL;
+	}
+
+	return ret;
+}
+
+static struct module *module_load(const char *path, const char *name)
+{
+	void *handle;
+	void (*init)(void);
+	void (*deinit)(void);
+	struct module *module;
+
+	handle = dlopen(path, RTLD_GLOBAL | RTLD_NOW);
+	if (handle == NULL) {
+		i_error("dlopen(%s) failed: %s", path, dlerror());
+		return NULL;
+	}
+
+	/* get our init func */
+	init = get_symbol(path, handle, t_strconcat(name, "_init", NULL));
+	deinit = init == NULL ? NULL :
+		get_symbol(path, handle, t_strconcat(name, "_deinit", NULL));
+
+	if (init == NULL || deinit == NULL) {
+		(void)dlclose(handle);
+		return NULL;
+	}
+
+	init();
+
+	module = i_new(struct module, 1);
+	module->handle = handle;
+	module->deinit = deinit;
+	return module;
+}
+
+struct module *module_dir_load(const char *dir)
+{
+	DIR *dirp;
+	struct dirent *d;
+	const char *name, *path, *p;
+	struct module *modules, *module;
+
+	dirp = opendir(dir);
+	if (dirp == NULL) {
+		i_error("opendir(%s) failed: %m", dir);
+		return NULL;
+	}
+
+	modules = NULL;
+	while ((d = readdir(dirp)) != NULL) {
+		name = d->d_name;
+
+		if (name[0] == '.')
+			continue;
+
+		p = strstr(name, ".so");
+		if (p == NULL || strlen(p) != 3)
+			continue;
+
+		if (strncmp(name, "lib", 3) == 0)
+			name += 3;
+
+		t_push();
+		name = t_strdup_until(d->d_name, p);
+		path = t_strconcat(dir, "/", d->d_name, NULL);
+		module = module_load(path, name);
+		t_pop();
+
+		if (module != NULL) {
+			module->next = modules;
+			modules = module;
+		}
+	}
+
+	if (closedir(dirp) < 0)
+		i_error("closedir(%s) failed: %m", dir);
+
+	return modules;
+}
+
+void module_dir_unload(struct module *modules)
+{
+	struct module *next;
+
+	while (modules != NULL) {
+		next = modules->next;
+		modules->deinit();
+		if (dlclose(modules->handle) != 0)
+			i_error("dlclose() failed: %m");
+		i_free(modules);
+		modules = next;
+	}
+}
+
+#else
+
+struct module *module_dir_load(const char *dir __attr_unused__)
+{
+	i_error("Dynamically loadable module support not built in");
+	return NULL;
+}
+
+void module_dir_unload(struct module *modules __attr_unused__)
+{
+}
+
+#endif
diff --git a/src/lib/module-dir.h b/src/lib/module-dir.h
new file mode 100644
index 0000000000..53b293c61b
--- /dev/null
+++ b/src/lib/module-dir.h
@@ -0,0 +1,16 @@
+#ifndef __MODULE_DIR_H
+#define __MODULE_DIR_H
+
+struct module {
+	void *handle;
+	void (*deinit)(void);
+
+        struct module *next;
+};
+
+/* Load all modules in given directory. */
+struct module *module_dir_load(const char *dir);
+/* Unload all modules */
+void module_dir_unload(struct module *modules);
+
+#endif